Question

establish the relationship between emf and terminal potential difference of a cell and find expression for internal resistance​

Answer 1

Answer:

Let E be the e.m.f and V be the terminal voltage 

The current delivered ( I ) to a load ( R) from a cell with internal resistance (r) can be calculated as:

I=R+rE

And the Potential difference across the load or the Terminal Voltage can be calculated as:

V=I.R=R+rER